Condenser for refrigerating machines



July 9, 1929.

R. M. HYDE CONDENSER FOR REFRIGERATING MACHINES Filed Dec. 6. 1926 Izuenz a razzmflzg zg, V

Patented July 9, 1929.

UNITED STATES PATENT OFF 1,719,887 ICE.

BOLLIN M. HYDE, 0F DETROIT, MICHIGAN, ASSIGNOR TO MCCORD RADIATOR & MFG.

\ 00., OF DETROIT, MICHIGAN, .A CORPORATION OF MAINE.

CONDENSER FOR REFRIGERATING. MACHINES.

Application filed December This invention relates to improvements in condensers for use. with refrigerating machines, such as are installed in houses, apartments, hotels, and the like. a

In my copencling applicatlon Serial No. 141,491, filed October 14, 1926, I have shown, described, and claimed a condenser composed of a plurality of connected hollow sheet metal headers and curved seamless tubes with. heat radiating fins on the exterior of the tubes and with the whole assembly partaking of generally circular or annular form and adapted to be arranged directly in front of the air circulating fan of the compressor unit so as to be directly in the path of air flow created. by the fan to be effectively cooled thereby. The tubes define concentric circles with the tubes of the innermost circle extending around an axis projected from the fan and forming an opening at the center of the condenser through which air currents from the fan may flow without contacting with any portion of the condenser and thus wasted as having no cooling effect on the condenser.

The main object of my present invention is to provide a deflector at the center of the condenser so as to close the central opening referred to and cause the air currents mentioned to be directed against the'surfaces of the tubes and connected headers to be useful in cooling the same and not go to waste as heretofore, i

The invention consists further in the matters hereinafter described and claimed.

In the accompanying drawings- Fig. 1 is a front elevational view of a condenser equipped with an air deflector at the center thereof in accordance with my invention' Fig. 2 is a side view of the condenser with parts broken away and parts in section for the purposes of illustration; and

Fig. 3. is an enlarged vertical sectional view taken on line 33 of Fig. 2, to show the manner in which tubes are connected with a header.

The condenser with which my deflector is used consists of a plurality of curved tubes 1, 1 arranged in concentric circles and connected for the circulation of a refrigerant therethrough by hollow headers 2, 2, as shown in Figs. 1 and 2. This arrangement gives the condenser circular or annular form so that it may be mounted directly in front 6, 1926. Serial N0. 152,780.

of the fan 3 driven by the motor of the coin pressor unit. The condenser is thus directly in the path of the air flow created by the fan and will be effectively cooled thereby for all of the portions of the condenser may be within the area of the fans influence by being within the outer periphery thereof.

The inner circle of tubes 1, 1 provide an opening through the center of the condenser, through which opening air currents from the fan 3 could freely pass without contacting with the condenser to have any cooling effect thereon if it were not for the deflector 4 which I provide at the center of the condenser to close such opening. The deflector 4 is preferably in the form of a single member stamped from sheet metal and of a size to set in and close the opening at the center of the condenser, as shown in Figs. 1 and 2.

The deflector 4 has a conical portion 5 which extends toward the fan 3 and has its apex in substantial alignment with the of rotation of the fan. Said conical portion 5 extends to the tubes 1, 1 of the inner circle and serves to deflect air currents delivered from the central portion of the fan toward the tubes and headers to aid in cooling the same, instead of going to waste as when the center of the condenser left open, as shown in my copending application.

The deflector 4 may be secured in place by being soldered either to the tubes or the headers or both, and Where it contacts the headers it is cut away to receive them. In the particular condenser shown in the drawings, the headers 2, 2 are radially disposed with respect to the circles defined by the tubes 1, 1 and the latter are all in the same plane, or they could be arranged in sets in parallel planes as shown in my said copemling application. The deflector 4 has its conical portion 5 extending out of the plane of the tubes 1, 1 on the side of the condenser facing the fan 3, as shown in Fig. 2.

The headers 2, 2 are preferably stamped from sheet metal in half sections, which are secured together at their overlapping marginal flanges 6, 7 by lock-seaming, soldering, stitch-welding, or any other preferred method. The tubes 1, 1 are preferably made from seamless tubing and have fin strips 8, 8 spirally wound about the exterior thereof. Plain tubes could be used or a combination of pain and finned tubes could be used if desire The headers 2, 2 have inlet and outlet openings 9, 10," respectively; to which are connected suitable pipes 11, 12 for coupling the condenser in the refrigerant circulation. The tubes 1, 1 are connected with the headers 2, 2 by having their ends inserted and secured in flanged holes 13, 18 made in the headers, as shown in Fig; 3. When the condenser is made with-a pair of headers 2, 2, as shown in the drawings, the tubes 1, 1 are semicircular and may, be connected to the respective half sections of the headers before the half sections are joined together to complete the head'ers. In use the condenser receives refrigerant under a high pressure and a high temperature and discharges the refrigerant at substantially'the same pressure but at a considerably lower temperature due to the cooling action of the condenser. The headers and tubes have relatively thin metal walls for the rapid cooling of the refrigerant.

-I claim as my invention:

1. A condenser for refrigerating machines adapted to receive refrigerant under a high pressure and a high temperature and discharge the refrigerant therefrom at substantially the same pressure but at a considerably lower temperature, said condenser comprising oppositely disposed hollow headers arranged] in the same plane and in radial alignment, a multiplicity of curved tubes on opposite sides of the headers and arranged in concentric circles and in substantially the same plane, said headers intersecting and connected with all of the convolutions of the 'tubes,-said tubes and headers having relatively thin metal walls for the rapid cooling of the refrigerant supplied to the condenser, the inlet and the outlet for the condenser being in different headers, and a conical deflector closing the center of the condenser as defined by the inner circle of tubes, said deflector having its conical portion extending outward from the plane of the tubes for causing the air blown over the condenser from the conical side of the deflector to be deflected thereby over the tubes'and headers.

2. A condenser for refrigerating machines adapted to receive a refrigerant under a high pressure and a high temperature and discharge the refrigerant therefrom at substantially the same pressure but at a considerably lower temperature, said condenser comprising oppositely disposed hollow headers arranged in the same plane and in radial alignment, a multiplicity of curved tubes on opposite sides of the headers and arranged in concentric circles and in substantially the same plane, said headers intersecting and connected with all of the convolutions of the tubes, said tubes and headers having relatively thin metal walls for the rapid cooling of the refrigerant supplied thereto, the inlet and the outlet for the condenser being in different headers, a conical deflector closing the center of the condenser as defined by the inner circle of tubes, said deflector having its conical portion extending outward from the plane of the tubes for causing the air blown over the condenser from the side of the deflector to be deflected thereby over the tubes and headers, and heat radiating fins on the exterior of the tubes.

8. A condenser for refrigerating machines, comprising oppositely disposed hollow headers arranged in the same plane and in radial alignment, and a multiplicit of curved tubes on opposite sides of the readers and arranged in concentric circles and in substantially the same plane, said headers intersecting and connected with all of the. convolutions of the tubes, said tubes and headers having relatively thin metal walls, the inlet and the outlet for the condenser being in different headers, and a conical deflector closing the center of the condt-inser as defined by the inner circle of tubes, said deflector having its outer marginal portion extending behind said inner tubes and cut away at the headers to accommodate the same, said deflector having its conical portion extending outward from the plane of the tubes so as to deflect the air over the headers and the tubes.

In testimony whereof I aflix my signature this 3rd day of December 1926.

' ROLLIN M. HYDE. 

